The marker is required to record for each hole only the gross score of whichever partner's score is to count. The gross scores to count must be individually identifiable; otherwise, the side is disqualified. Only one of the partners need be responsible for complying with Rule 6-6b.

If a competitor is in breach of Rule 15-3b for making a stroke at a wrong ball, he incurs a penalty of two strokes and must correct his mistake by playing the correct ball or by proceeding under the Rules. His partner incurs no penalty, even if the wrong ball belongs to him.